20171013-cpad--the mcp-pmt mass production and batch …...oct 13, 2017 · 5”(8”) prototype...

The Mass Production and Batch testof the 20 inch MCP-PMT

Sen QIAN ( 钱森 )，On Behalf of the MCP-PMT Workgroup

Institute of High energy Physics, Chinese Academy of Science

[email protected] 2017.Oct.14th

mailto:[email protected]

The 20 inch MCP-PMT R&D in ChinaThe researchers of MLAPC（Microchannel-Plate-Based Large Area Photomultiplier Collaboration）

in IHEP designed a new type of MCP-PMT for JUNO (Jiangmen Underground Neutrino Observatory）

The small MCP unit instead of the large Dynode, the transmission and reflection photocathode were assembled in the same glass shell to form nearly 4π photocathode effective area to enhance the efficiency of the photoelectron detecting.

The primary design in 2009

The final design in 2015

Characteristics unit MCP-PMT（IHEP）

Electron Multiplier -- MCP

Photocathode mode -- reflection+ transmission

QuantumEfficiency（400nm） % 26 (T), 30 (T+R)

Relativity Detection Efficiency % ~ 100%

P/V of SPE ＞ 3

TTS on the top point ns ~12

Rise time/ Fall time ns R~2 , F~10

Anode Dark Count Hz ~30K

After Pulse Time distribution us 4.5

After Pulse Rate % 3

Glass -- Low-Potassium Glass

The typical performance of the 20 inch MCP-PMT Waveform of the Prototype

SPE of the Prototype

TTS of the Prototype DR of the Prototype QE Uniformity

➢ TheAgingbehaviorsoftheMCP-PMT

2014:8inchMCP-PMT（normalMCP）Testcondition:1000pe,gain=1X10^7GainofMPE:Thegainreducedby70%@16C

2016:20inchMCP-PMT81#(SpecialMCP)

Testcondition:1000pe,gain=1X10^7

GainofMPE:Thegainreducedby12%,whenthecumulativeoutputchargewas41C.

GainofSPE:Thegainreducedby30%,whenthecumulativeoutputchargewas41C.

TheperformanceofnewtypeMCP-PMTwaslargelyimproved（420days@withoperation1000pe）

5”(8”) prototype Transmission

+reflection

20” prototype Transmission

+reflection

Design

Mass production

HQE Production line batch test sys

Batch test

2017-2018

2016

2014-2015

2010-20132009

➢ Overview of the Design and Production of the MCP-PMT

Outline

➢1. The Mass Production of the 20 inch MCP-PMT;

- - The production line;

- - The batch test platform; the review；the transport；

➢2. The Batch Test of the 20 inch MCP-PMT ;

- - The data base; The test result；

• 2 units were working already in 2015;

• 6 units were ready on the summer 2016;

• 14 units were ready on the winter 2016;

One Unit could produce 3PMTs in Two days;

——> 22 Units for the mass production ;

——> 33 PMTs / 1 day ;

➢ 1.1.The20inchMCP–PMTproductionline(2016)

➢ The celebration for the 20 inch MCP – PMT production line (2016)

Aim:

1PMT need 2 days total 33 pic/ day;

30 pic PMTs (OK!) /day

PMT JUNOContractNNVT

test

QE@410nm

A A

QE-Un B A

QE-λ B B

SPE A A

Gain A A

DE B A

TTS B A

APR B A

Linearity B A

RT/FT A A

DR A A

➢Equipment: 2+1 Dark Room;—> 1 dark room = 32 PMTs➢Time: 48h (2 days) / PMT;➢ One day: for training PMTs;➢ One day: for testing PMTs;➢One Day: 30 PMTs;➢Test Ratio: 100%;

➢Equipment: 2 pic; —> 80 LED for testing;➢Time: 0.5h / PMT;

20min for cooling PMT；

10min for scanning test;➢One Day: 30 PMTs;➢Test Ratio: 100%;

➢ 1.2TheBatchtestplatform(2016.10-2017.02)

➢ QE sub-system ➢ SPE Batch Test sub-system

A: will be test 100% one by one; B: will be test 10%~20%, part of them.

Uniformity

➢ QE sub-system ➢ SPE Batch Test sub-system

➢TheQEScanningsys. ➢Thesurfacelight ➢Thecontainersys. ➢TheDAQsys.

➢ThelogicconstructionoftheSPEtestsystem

➢with soft iron to shielding EM

—>Theproductionlineandtestingproceduresandequipmentareworld-classwithuniquecapabilities.

—>ThedesignoftheMCP-PMThasacquiredapatentofinventionandintellectualpropertyrights.

➢ 1.3TheMCP-PMTInternationalEvaluation

20inchMicro-channelPlatePhotomultiplierTubeInternational

Evaluationon28th.May2017

➢ 1.4 The transport by road for the MCP-PMT to JUNO

Status Times Date Pics

finish-336 1 2017.05.15 336

finish-648 2 2017.06.14 312

finish-1008 3 2017.07.04 360

finish-1344 4 2017.07.26 336

finish-1680 5 2017.08.24 336

finish-2016 6 2017.09.12 336

finish-2351 7 2017.09.25 336

finish-2687 8 2017.10.09 336

The shipping by track from NNVT in Nanjing The storage in JUNO in Guangzhou

Outline

➢1. The Mass Production of the 20 inch MCP-PMT;

- - The production line;

- - The batch test platform; the review；the transport；

➢2. The Batch Test of the 20 inch MCP-PMT ;

- - The data base; The test result；

PMTParmaeters

JUNOContract

data inContract

NNVTtest Prototype

mass production

单波⻓长QE@410nm A ≥ 26.5% A ~ 26% ?

均匀性（QE Uniformity） B ≤ 15% A ≤ 10% ?

频谱响应曲线（QE-λ） B 300nm ~ 650 nm B(50%) 300nm ~ 650 nm ?

单光⼦子探测（SPE-P/V） A ≥ 2.8 A ~ 5.6 ?

能量量分辨率（SPE-ER） A ≤ 40% A ~ 41% ?

增益（Gain） A 1E+07 A 1E+07 ?

⾼高压（HV） A ≤ 2800V A ~ 1980V ?

探测效率（DE） B ≥ 24% A ~ 26% ?

暗计数率（DR） A ≤ 30KHz A ~ 30KHz ?

渡越时间涨落（TTS） B ≤ 15ns A ~12ns ?

后脉冲率（APR） B ≤ 5% A ~ 2.5% ?

⾮非线性（Linearity）

PMTs Hamamatsu MCP-PMT prototype~300

MCP-PMTs~1000

MCP-PMTs~2687

MCP-PMTs

QE @ 410nm 30% 26% 29.5% 29.2% 29.2%

Hamamatsu Prototype

MCP-PMT-prototype

➢ 2.1 The Quantum Efficiency (1)

1000 shipped MCP-PMTs：

total shipped MCP-PMTs：~2687

The QE graph with NNVT and Hamamatsu

PMTs HamamatsuMCP-PMT prototype

~300 MCP-PMTs

~1000 MCP-PMTs

~2687 MCP-PMTs

Uni-QE @ 410nm < 10% < 10% 8.1% 7.8% 7.7%

Hamamatsu Prototype

MCP-PMT-prototype

➢ 2.2 The Uniformity of the Photocathode



The average data of 2688 piece PMTs The good situation

The bad situation of the QE uniformity


~300 MCP-PMTs

~1000 MCP-PMTs

~2687 MCP-PMTs

HV @ Gain~1X10^7 1650V 1930V 1780V 1767V 1747V

Hamamatsu Prototype

MCP-PMT-prototype

➢ 2.3 The HV @ Gain~1X10^7




MCP-PMTs~1000

MCP-PMTs~2687

MCP-PMTs

SPE @ Gain~1X10^7 3.7 5.6 8.2 7.1 6.8

Hamamatsu Prototype

MCP-PMT-prototype

➢ 2.4 The P/V of the SPE




MCP-PMTs~1000

MCP-PMTs~2687

MCP-PMTs

ER @ Gain~1X10^7 30% 41% 30.9% 33.1% 33.4%

Hamamatsu Prototype

MCP-PMT-prototype

➢ 2.5 The Energy Resolution of the SPE




MCP-PMTs~1000

MCP-PMTs~2687

MCP-PMTs

DE @ Gain~1X10^7 27% 26% 28.9% 29.3% 29.2%

Hamamatsu Prototype

MCP-PMT-prototype

➢ 2.6 The Relativity Detection Efficiency of SPE




~300 MCP-PMTs

~1000 MCP-PMTs

~2687 MCP-PMTs

CE @ Gain~1X10^7 90% 100% 98% 100% 100%

Hamamatsu Prototype

MCP-PMT-prototype

➢ 2.7 The Collection Efficiency of SPE




~300 MCP-PMTs

~1000 MCP-PMTs

~2687 MCP-PMTs

DR @ 0.25 pe 25 KHz 30 KHz 33.5 KHz 36.9 KHz 40KHz

Hamamatsu Prototype

MCP-PMT-prototype

➢ 2.8 The Dark Rate @ Gain~1X10^7



Detection Efficiency Dark Rate

≤27% 50KHz

27%

➢ 2.8 The Dark Rate (2) —DR vs DE


MCP-PMTs~1000

MCP-PMTs~2687

MCP-PMTs

RT @ Gain~1X10^7 6.7 ns 1.2 ns 1.4 ns 1.4 ns 1.4 ns

Hamamatsu Prototype

MCP-PMT-prototype

➢ 2.9 The Rise Time of the Waveform




MCP-PMTs~1000

MCP-PMTs~2687

MCP-PMTs

RT @ Gain~1X10^7 17.7 ns 10.2 ns 24.4 ns 25.2 ns 24.9 ns

Hamamatsu Prototype

MCP-PMT-prototype

➢ 2.10 The Fall Time of the Waveform




~300 MCP-PMTs

~1000 MCP-PMTs

~2687 MCP-PMTs

TTS @ Gain~1X10^7 2.8 ns 12 ns 19.2 ns 19.5ns 20.0ns

Hamamatsu Prototype

MCP-PMT-prototype

➢ 2.11 The TTS @ Gain~1X10^7




~300 MCP-PMTs

~1000 MCP-PMTs

~2687 MCP-PMTs

APR @ Gain~1X10^7 10% 2.5% 1.2% 0.8% 0.71%

Hamamatsu Prototype

MCP-PMT-prototype

➢ 2.12 The After Pulse Rate @ Gain~1X10^7




MCP-PMTs~1000

MCP-PMTs~2687

MCP-PMTs

Lin @

U238(Bq/kg) Th232(Bq/kg) K40(Bq/kg)

Beforeimprovement 5.4 4.3 7.6

Lastyearcollaborationmeetingresults

5days 2.96±0.08 1.39±0.04 2.8±0.3

10days 2.70±0.10 0.97±0.05 1.8±0.3

Lastcollaborationmeetingresults

Period1 2.0 0.7 1.2

Period2 1.7 0.6 0.6

Period3 1.5 0.4 0.2

Sincelastcollaboration 2.5(withRa226correction) 0.3 0.3

PMTRequirement 2.50 0.50 0.50

➢ 2.14 The low background glass of MCP-PMT

PMTParmaeters

JUNOContract

data inContract

NNVTtest Prototype

1000 mass production



单波⻓长QE@410nm A ≥ 26.5% A ~ 26% 29.2% 29.1% 29.2%

均匀性（QE Uniformity） B ≤ 10% A ≤ 10% 7.8% 7.9% 7.7%

频谱响应曲线（QE-λ） B 300nm ~ 650 nm B(50%)300nm ~ 650 nm

300nm ~ 650 nm

300nm ~ 650 nm

300nm ~ 650 nm

单光⼦子探测（SPE-P/V） A ≥ 2.8 A ~ 5.6 7.1 6.9 6.9

能量量分辨率（SPE-ER） A ≤ 40% A ~ 41% 33.1% 33.4% 33.4%

增益（Gain） A 1E+07 A 1E+07 1E+07 1E+07 1E+07

⾼高压（HV） A ≤ 2800V A ~ 1980V 1767V 1754V 1747V

探测效率（DE） B ≥ 24% A ~ 26% 29.3% 29.1% 29.2%

暗计数率（DR） A ≤ 30KHz A ~ 30KHz 36.9KHz 38.8 KHz 40.0 KHz

渡越时间涨落（TTS） B ≤ 15ns A ~12ns 19.5ns 20.0ns 20.6ns

后脉冲率（APR） B ≤ 5% A ~ 2.5% 0.8% 0.8% 0.7%

⾮非线性（Linearity）

Thanks！谢谢！

Thanks for your attention! Any comment and suggestion are welcomed!

20171013-cpad--the mcp-pmt mass production and batch …...oct 13, 2017 · 5”(8”) prototype...

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